Influence of a La0.6Sr0.4CoO3-δ Functional Layer on (Ba0.5Sr0.5)(Co0.8Fe0.2)O3-δ Oxygen Transport Membranes (OTMs)

被引：1

作者：

Unger, L. -S. ^{[1
]}

Meffert, M. ^{[2
]}

Wilde, V. ^{[2
]}

Stoermer, H. ^{[2
]}

Niedrig, C. ^{[1
]}

Menesklou, W. ^{[1
]}

Wagner, S. F. ^{[1
]}

Gerthsen, D. ^{[2
]}

Ivers-Tiffee, E. ^{[1
]}

机构：

[1] Karlsruhe Inst Technol, Inst Appl Mat IAM WET, D-76131 Karlsruhe, Germany

[2] Karlsruhe Inst Technol, Lab Elect Microscopy, D-76131 Karlsruhe, Germany

来源：

IONIC AND MIXED CONDUCTING CERAMICS 10 | 2016年 / 72卷 / 07期

关键词：

THIN-FILM CATHODES; SURFACE-EXCHANGE; BA0.5SR0.5CO0.8FE0.2O3-DELTA; PERMEATION; STABILITY; SOFC; PHASE; BSCF; CO2;

D O I：

10.1149/07207.0037ecst

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Nanoporous La0.6Sr0.4CoO3-delta (LSC) thin films with a thickness between 100 and 500 nm were derived from metal-organic precursors. These layers were applied onto a thin Ba0.5Sr0.5Co0.8Fe0.2O3-delta substrate (thickness approximate to 400 mu m) in order to enhance oxygen surface exchange. The surface exchange coefficient k(delta) of uncoated and LSC-coated dense BSCF ceramic bulk samples were determined by electrical conductivity relaxation (ECR) measurements. By combining the results from these ECR measurements under varying oxygen partial pressures with transmission electron microscopy (TEM) analyses the influence of the nanostructured functional LSC layer on the dense BSCF ceramic membrane was investigated and discussed. Elemental distributions before and after aging obtained by analytical scanning TEM were carried out to address cation interdiffusion between LSC and BSCF.

引用

页码：37 / 45

页数：9

共 27 条

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